Hopkinton-based construction management firm TRG Builders (TRGB) has added Keith Kerr, Douglas Stapelfeld and Michael O’Neill to its project management team.

Kerr joins TRG Builders as a project manager with a background that includes construction projects for Millennium Pharmaceuticals, Boston University, Northeastern University, AT&T and the Renaissance Marriott Boston Waterfront Hotel, according to a statement. In this new role, Kerr will be responsible for managing the daily operations of projects for TIAX, Genzyme and Allergan Medical.

Stapelfeld will assume the role of project superintendent. Prior to his new role with TRGB, he supervised laboratory projects for clients including Merck, Boston University and Hittite Microwave Corp.

O’Neill joins the company as a working superintendent and is currently managing construction projects for Alexandria Real Estate Equities Inc.

"As we continue to grow, it is critical that TRG Builders is supported by professionals who understand the complexities of laboratory construction," said Douglas Queen, president of TRG Builders. "Our projects consist of sophisticated facilities that enable our clients to pursue highly advanced initiatives, and we’re excited to expand our project management team in support of these efforts."